Safety-guard for die-presses.



S. BAILEY, T. V. LLOYD &-E. JONES.

SAFETY GUARD FOR D IE PRESSES.

APPLICATION HLED JUNE 6, 19H).

l f fififiiw Patented Feb.19,1918.

ML 5W Inventors.

Aimmey.

UNITED TATE PATENT @EFIQE.

SAMUEL BAILEY, TREVOR VALENTINE LLOYD, AND EVAN JONES, OF MELYNCRYTHAN,NEATH, WALES; SAID LLOYD AND SAID JONES ASSIGNORS TO SAID BAILEY.

SAFETY-GUARD FOR DIE-PRESSES.

Specification of Letters Patent.

Patented Feb. 19, 1918.

Application filed June 6, 1916. Serial No. 102,080.

To all whom it may concern:

Be it known that we, SAMUEL BAILEY, TRE- von VALENTINE LLOYD, and EVAN JONES, all subjects of the King of Great Britain, and all residing atMelyncrythan, leath, South \Vales, have invented certain new and usefulImprovements in Safety-Guards for Die- Presses, of which the followingis a specification.

Our invention relates to improvements in safety guards for die pressesand like metal working machines, in which two surfaces come togetherwith great force and are liable to trap the fingers of the operatorunless very careful; the object of the invention is to provide a guardwhich will safely protect the dangerous zone while not interfering withthe worker seeing how to feed the material thereto correctly.

We attain these objects by the mechanism illustrated in the accompanyingdrawing, in which Figure l is a front elevation of a guard in position,on a press, Fig. 2 is a side view, partly in section, on the line w 1 ofFig. 1, Fig. 8 is a perspective view of the side guards in theirrelative positions, Fig. 4 shows the front plate detached; and Fig. 5shows a modified form of front plate with the glass window in a fixedframe.

Referring to the drawings, A, B, C, represent the front, and side platesrespectively of a guard attached to a press Z of which U is thecrosshead carrying the moving die piece V, and W is the stationary diepiece attached to the press table; to is the danger point it is desiredto guard. viz: the meeting place or point of the dies V and W. To thisend the front plate A carries the projecting part D which depends belowthe point w and extending thereover, the transparent pane of glass E iscarried by a hinged frame or door a having ribs F, G, H, I standing upto form a support for the glass, and constituting a window over anopening in the central part of the plate A.

The side plates B, C cover in the base and ends of the guard by means ofportions J, K respectively, while sloping ribs L project from each sideso as just to leave the meeting place to clear for the insertion of thestrip or plate to be stamped. These plates B, C, are adjustably securedto brackets M, N, respectively by the pins or bolts 0 passing throughslotted holes such as P.

The brackets themselves are adjustable by reason of their attachment bythe slots Q, and they also carry the front plate A by the bolts It.

The pane of glass E as shown in Figs. 1 and 4 is carried by a door ahinged at S and fastened at its opening side by the pin '1 passingthrough the loop Z on the door a; this allows of the door being openedand the glass cleaned when it becomes dirty, and being fixed within itssupporting ribs the glass cannot be removed by the operator. A somewhatcheaper form of window is shown in Fig. 5 where the material of thefront plate A is itself turned up to form a recessed framework aroundthe opening, into which a loose pane of glass E may he slipped from thetop. This is equally effective as a guard so long as the transparentpane is in position, but has the defect that a careless operator canremove the pane and omit replacing it.

In operation the material will usually be fed as a strip passing throughthe contact point to from one side to the other, and by means of thewindow E, the worker can see exactly what he is doing though he cannotget his fingers into the opening a; by reason of the several guards.

By the use of this invention the worker can see exactly the relativeposition of the material he, or she, is feeding and the die surfaces,and can correctly locate the material being pressed in relation to theposi tion gages.

Other transparent sheets than glass may be used for the sheet E, forinstance celluloid, mica, and the like material may be used, and thepart of the front plate supporting the transparent sheet E will dependdownwardly where the die parts are located so asnot to obstruct the sidepaths to the die opening.

The material to be stamped is fed in at the sides of the die opening to,the ribs L only descending so far as will leave the opening to clear forthe insertion of the sheets. The whole guard when in position resemblesa partial box, but the front plate may be formed in separate portionssupporting the transparent plate E between them.

Having thus described the nature and objects of our invention, what weclaim as new and desire to secure by Letters Patent is 1. In a device ofthe class described, the

combination of a pair of angled side plates having ribs projectingtherefrom, with a front plate havingan opening therethrough, atransparent sheet, means for securing the transparent sheet over thesaid opening, angle brackets adjustably attached to a "stationary partof the machine and having lugs projecting forwardly of the place to beguarded, means for attaching the front plate to the said forwardlyprojecting lugs, and. means :for .adjus tably .attaching the angled sideplates to the arms of the angled brackets, substantially as describedherein.

2. In a device of the class described, the

combination of a pair of angled side plates having ribs projecting fromtheir base portions, with a'front plate having an opening therethrough,a hinged frame adapted to close over the said opening, a transparentsheet secured in the hinged frame. means for fastening the hinged framewhen closed, an gle brackets adjustably attached to a stationary part ofthe machine and having lugs projecting forwardly of the place to beguarded, means for attaching the front plate to the said forwardlyprojecting lugs, and means for adjustably attaching the angled sideplates to the arms of the angle brackets, substantially as describedherein.

3. In a sheet metal working press, the combination of a pair of angledside plates having ribs or flanges projecting from their base portionsso as to leave an opening to the die surfaces clear, and havingtransverse I slots in their base portions, with a front Copies of thispatent may be obtained for plate having a window opening'there'th roughdisposed so as to cover the front opening of the diesurfaces, asheet ofglass,n1eans' for securing the glass over the window opening in thefront plate, angle brackets slotted lon itu'dinallon one arm and havirmforwardly projecting lugs, and connecting screws or "the like adjustably attaching-the combination of a pair of angled side plates hayingribs or flanges projecting from their base portions 'so as to leave theopening to the die surfacesclear, and havingtransverse slots in theirbase portions, with a front plate having a window opening therethroughdisposed so as to cover the front opening to the die surfaces, a hingedframe adapted to close over the saidwindow opening, a sheet of glasssecured in the hinged frame-by turning its edges thereover, a pin andloops for fastening the hinged frame when closed, angle brackets slottedlongitudinally on one arm and having forwardlv projecting lugs, andconnecting screws or the like adjustably attaching the brackets to themachine, the side plates, and the front plate respectively, for thepurpose set forth.

In testimony whereof we have affixed our signatures.

SAMUEL BAILEY, TREVOR VALENTINE LLOYD; EVAN J ONES.

five cents each. by addressing the Commissioner of iatents,

Washington, D. C.

